Figure 15.
Global analysis applied to limiting conductance states in Scheme 4. Plots of 〈qC〉 and 〈qO〉 are shown for [Ca2+]i = 10−3 µM (solid curves) and 103 µM (dashed curves). The expression for closed- and open-state VM (vertical dashed lines) are given by VM(C) = [ΔGJ1 + ΔGJ2 + ΔWG − kTln(ZCA/ZCR)]/(ΔqJ1 + ΔqJ2) and VM(O) = [ΔGJ1 + ΔGJ2 + ΔWG + ΔWD − kTln(ZOA/ZOR)]/(ΔqJ1 + ΔqJ2). The area of the parallelogram is given by −4(ΔqJ1 + ΔqJ2)LΔVMμ(−) = −4ΔWD. The area of the smaller rectangle is given by −4(ΔqJ1 + ΔqJ2) μΔVM(O) = −4ΔWE.